ADC12铝合金高速铣削切削速度对前刀面磨损的影响  

Effect of cutting speed on the wear of rake face in high speed milling on ADC12 aluminum alloy

作　　者：米少伟 林有希[1] 孟鑫鑫[1] MI Shaowei;LIN Youxi;MENG Xinxin(School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学机械工程及自动化学院,福建福州350116

出　　处：《粉末冶金工业》2021年第5期99-104,共6页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51975123)。

摘　　要：ADC12铝合金凭借良好的塑性,较高的耐腐蚀性,被广泛应用于航空、汽车等领域。由于该铝合金较软、易粘附在前刀面,造成刀具磨损,本文对ADC12铝合金进行了高速铣削实验,研究了切削速度与切削力、前刀面粘结量之间的关系,分析了刀具的粘结磨损机理。结果表明:随着铣削速度的增加,切削力和粘结量均呈现先增加后减少的趋势,在铣削速度为600 m/min时切削力最大,前刀面粘结量也达到最大,切削力对前刀面粘结量有明显的影响。前刀面主要磨损形式为粘结磨损,在刀具表面氧化膜被破坏后,前刀面快速形成粘结层,粘结层在"负载-卸载"力的冲击下,先产生裂纹,随后脱落形成新的粘结层,粘结层的脱落带走了刀具的表面材料,使刀具发生粘结磨损。ADC12 Aluminum alloy has good plasticity and high corrosion resistance,is widely used in aviation,automobile and other industries.Because the aluminum alloy is soft and easy to adhere to the rake face of tool,the high speed milling test of ADC12 aluminum alloy was carried out in this paper.The relationship between cutting speed,cutting force and the amount of bonding on the rake face of tool was studied,and the mechanism of tool adhesive wear was analyzed.The results show that with the increase of milling speed,the cutting force and the bond amount both increase first and then decrease,the cutting force reaches the maximum at 600 m/min,and the bond amount of the rake face also reaches the maximum.The cutting force has a significant effect on the bond amount of the rake face.Rake face of the main wear form is adhesive wear,after cutting tool surface oxidation film is damaged,rake face of rapid formation of adhesive layer,adhesive layer under the impact of the"loading and unloading"force,crack first,then come off to form a new bond layer,bonding layer peel away on the surface of the cutting tool material,result in adhesion wear of cutting tool.

关 键 词：ADC12铝合金 切削速度 粘结层脱落 刀具磨损 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]